AssetBundless issue

Hello.
If I using WWW to load bundles it work only first time. Second application start give me error:

Error while downloading Asset Bundle: Failed to decompress data for the AssetBundle ‘http://169.254.137.78:7888/Windows/uiscenes’.
Failed downloading bundle uiscenes from http://169.254.137.78:7888/Windows/uiscenes: Unable to write data.

If I using AssetBundle.LoadFromFile from downloaded bundle it it work only first time to. Second application start give me error:

Failed to decompress data for the AssetBundle.

And this errors fixed only when i restart the computer. Unity 2017.3 . How to? Sorry for my English.

Can you show us your code?